Pran Mudra

With each hand: Place the tips of the thumb, ring finger, and little finger together. The
other fingers remain extended. As needed, use for 5 to 30 minutes. Or, as a course of
treatment, do three times a day for 15 minutes.
The Pran Mudra activates the root chakra , in which the elemental force of a human being is found. I like to compare this place with a fire that is either ablaze or just glows quietly. How brightly
the fire burns depends on how well we tend it. This finger position stimulates
the nourishing energy in the pelvic floor. The Pran Mudra generally increases vitality, reduces fatigue and nervousness, and improves vision. It is also used against eye diseases. On the
mental-emotional level, it increases our staying power and assertiveness, healthy self-confidence, gives us the courage to start something new, and the strength to see things through. Clear eyes are also a sign of a mental outlook emphasizing clarity and a clear mind, which means clearly structured thoughts and ideas.

According to Kim da Silva, when you do the Pran Mudra you can also put your thumb onto the fingernails of the other two fingers instead of on their tips. This has the effect of causing both the right and left brain hemispheres to function equally, become active, and mutually complement each other, which is very important for holistic health.